67% (2007)

58% (2013)

63% (2010)

63% (2009)

39% (2014)

64% (2013)

76% (2001)

58% (2001)

65% (2005)

0% (1970)

80% (2005)

45% (1997)

100% (2003)

75% (2015)

100% (2006)

53% (2002)

87% (1999)

73% (2015)

63% (2013)

60% (2008)